TABLE A. 



Meridian transit observations made at mouiJi of the Rio Grande with 46-incA transit, {by Troughton & Simms^) and sidereal chronometer No. 2440, {bij ParJcinson 

 & Frodsham) and computations of apparent right ascension and longitude deduced therefrom. By G. (7. Gardner and J. H. Clark^obs'rs ; C. N. Thom^ comp. 



Date. 



1B53. 

 Au2. 12 



13 



1 



15 



6 

 7 

 8 

 9 

 10 

 IL 



16 



12 



13 

 14 

 15 

 16 

 17 

 16 

 19 



20 

 21 



23 



24 

 25 

 26 



Moon's Ist limb. E 



xp Opliiuchi . 

 a ScorpU ... 



G, C. 1402 



G. C. 1418 



B 

 h 



Moon's 1st limb. 



Ophiuchi 



Opliiuclii 



G. C. 15;^3 



y Draconis , 

 G. C. 1575 



E 



v* Saeittarii. 



i^ Sagitlarii 



Moon's 1st limb. 



*f» Sagittarii 



y AfinilT..,,, 



P Sagittarii., 



a' Capricurni 

 a Pavonis . . , 



W, 



A' Sairittadi 



y Afjuilas 



a Aquil.T 



b Sagittarii 



Moon's 1st limb. 

 p i'apricorni ...,., 



E. 





Cygni 



Secoiids of transit over the seven wires. 



I. 



«. 



04.6 

 55.8 

 06.6 

 19.3 



28.6 

 34.3 

 59.6 

 11.4 

 19.5 

 02.3 



58.2 



12.3 

 24.8 

 59.4 

 33.7 

 37.3 

 03.4 



00.8 

 21.5 

 35.4 

 05.3 

 12.2 

 49.2 



II. 



«. 



22.8 



14.8 

 27.2 



3C.8 



47.7 

 53.2 



18.3 

 28.6 

 4G.8 



19.7 



16.5 

 56.8 

 31.9 

 43.8 

 16.6 

 53.3 

 54.6 

 35.0 



26.6 45.4 



18.2 



38.6 

 54.8 

 24,1 

 30.0 

 13.3 



III, 



s. 



16.2 



41.2 



34.2 

 47.5 

 54.2 



06.8 

 11.8 

 36.8 

 45.5 

 14.4 

 37,2 



34.6 

 14.4 



51.2 

 02.5 

 v'>4.0 



U.8 

 11.8 

 05.8 



04.3 

 35.3 

 55.8 



43.3 



47.6 



IV. 



8, 



34,8 



59.3 

 53.0 

 08.4 

 11.4 



26.0 

 30.8 



55,5 



02.6 



42.2 

 54.3 



53.3 

 33.3 

 10.7 

 21.6 



31.2 

 29.4 

 37.6 



22.9 

 52.6 

 13.2 



13.6 33.0 



02.6 

 05,7 



37,2 01.3 

 I 



V. 



s. 



53.3 



17,4 

 11.8 



28.8 



28.6 



45.2 

 49.5 

 14.2 

 20.2 

 09.4 

 11.6 



12.2 



51.6 

 30.3 

 40.3 



51.6 09.2 



50.4 

 47.3 



00.6 



41.8 

 10.0 

 30.8 

 52.6 

 21.8 

 23.8 

 25.5 



VI. Vll. 



5. 



S, 



12.0 30.6 

 35.3 53.6 



30.7 

 49.4 

 45.8 





04.2 

 08.3 

 32.7 

 36.8 

 36.6 

 28,8 



50.2 

 10,3 

 03.3 



23.3 

 27.2 

 51.6 

 54.3 

 04.3 

 46.4 



30.3 

 09. S 

 49.8 

 59.2 

 26,3 

 09.8 

 04.6 

 40.9 



00.7 



27.3 



47.7 

 12.1 



48.6 

 28.3 

 09.3 

 18.0 

 43.3 

 29.3 

 22.3 

 12.8 



19.6 

 44.5 

 05.3 

 31.2 



41.5 00.3 



42,0 

 49.3 



59.8 

 13.4 



o g 



■a O 



B B 



CI q; 



o ^ 



33 



17 44 34.72 



18 00 59.17 

 18 05 52.93 

 18 26 08.31 

 18 36 11.34 



18 46 25.97 



18 58 30.73 



19 02 55.53 

 19 26 02.77 



19 38 41.89 

 10 45 54.33 



20 30 53.39 

 20 34 33.2 



20 57 10.79 



21 13 21.46 

 21 24 51.49 

 21 33 31.36 

 21 55 29.61 

 21 59 37.87 



21 13 23.04 

 21 24 52.67 

 21 29 13.27 



21 33 3:i.24 



22 02 02.70 

 22 06 05.87 



2 22 01.31 



Error of- 



CoUima'n, 

 (azimuth.) 



Level. 



fi 



+ 2.44 

 (— 5.59) 



+ 1.50 

 — J. 59 



+ 1.50 

 (— 8.93) 



t/ 



— 1.50 



(— 8.59) 



+ 1.50 

 (— 19.21) 



+ 1.65 



1.65 



1.65 



1.65 



+ 1.65 



+ 4.81 

 4.81 

 4.74 

 4.40 

 4.40 



+ 4.40 



+ 0.82 

 0.82 

 0.^ 

 0.82 

 1.11 

 1.29 

 1.84 



+ 1.92 



+ 2.20 

 2.20 

 2.20 

 2.20 

 1.65 

 1,10 



+ 1.10 



% 



Remarks.— Equatorial intervals of each wire from the middle wire, (illumination eaBt.) 



I. ^11. . III. V. 



51s. 13 34»-03 17s. 09 17s. 19 



Equatorial reduction of mean of wires to middle wire 



Collimation of middle wire 



• Collimation of mean of wires 



i 



h. m. s. 



17 44 34.72 



18 00 59.08 

 18 05 52 80 

 18 26 08.11 

 18 36 11.24 



18 46 25.85 



18 58 30.55 



19 02 55.36 

 19 26 02.81 

 19 38 42.88 

 19 45 54.54 



20 30 52.85 

 20 34 32.78 



20 57 10.23 



21 13 20.90 

 21 24 51.29 

 21 33 30.79 

 21 55 29.24 

 21 59 36.68 



21 13 22,16 

 21 24 52.56 

 21 29 13.11 



21 33 32.28 



22 02 01.81 

 22 06 05.08 

 22 22 02.15 



VI. 

 34s, 14 



g 



•a 



09 



u 



ed 



O 



0) 



u 



a 



m 



a 



15.44 24.73 



16 1 



5 31.72 



16 20 25.54 

 16 40 40.81 

 16 50 44.17 



16 45 08.76 



17 13 00.89 

 17 17 25.50 

 17 40 32.93 



17 53 13.37 



18 00 25.26 



18 45 19.73 

 18 48 59.55 



18 55 05.69 



19 27 47.78 



19 39 18.2 



•^ 



19 47 57.71 



20 09 55.92 

 20 14 03.48 



19 27 47.78 



19 39 18.25 1 45 34.31 



I 



S 6 

 B o 





u 



V 



s 



o 



o 





ST ^ 



OQ 



s 



be 



< 



t3 

 C 



h» m* 5. 



1 45 27.36 

 1 45 27.26 

 1 45 27.30 

 1 45 27.07 



m. s. 



45 28.00 

 (+ 1.00) 



1 45 29.66 

 1 45 29.83 

 1 45 29.88 

 1 45 29.51 

 1 45 29.28 



45 30.06 

 (+ 2.25) 



1 45 33.12 

 1 45 33.23 





1 45 33.12 

 1 45 33.04 

 1 45 33.08 

 1 45 33.32 

 1 45 33.20 



45 33.40 

 (+ 2.26) 



1 45 34.38 



19 43 38.66 



19 47 57.70 



20 00 26.51 

 20 20 30.56 

 20 36 27.51 



1 45 34.45 

 1 45 34.58 



45 34 58 



(+ 0.88) 



1 45 34.52 

 1 45 34.64 



V- a 



rt^ P *- 



S 1 -g 



E o 



o 



I 









&.-§ 



ed 



.S fl 



2 T3 M 



lil 





^ ^ ^ 







q o 



cd 



a 



V EC q; 

 o C f£ 



^ -rs O 



J3 



cd 



<ij o 



9. ^ 



^ -o o 



O t> w 



D G 



** 'O O 



'a jd 



> 



o 



m. s. 



1 11.56 



h, m. s, 

 15 44 14.26 



5 ^ 



6 28 35.04 



1 13.62 



16 45 08.12 



17 13 00.91 

 17 17 25.48 



6 28 40.00 



1 14 85 



18 55 04.71 



6 28 35.91 



1 13 45 



20 00 25.30 



6 28 39.85 



VII. 

 51s. 32 



— 0s.O6 ± Os.OO 



+ 0s.l6 ± Os.Ol 



+ Os.lO ± Os.Ol 



(in arc = 4- 1"5±0'M 



O 



H 



a 

 ^ 

 ^ 



bO 



